From WikiLeaks

A former deputy director of the National Bureau of Investigation (NBI) of the Philippines, Ong declared that the 2004 national elections were rigged, starting an electoral crisis. He declared that he was the source of a set of original audio tapes that was in circulation around the country. The circulation has been ongoing since June 2005. One master tape, allegedly, is a recording of a wiretapped conversation between President Gloria Arroyo and Virgilio Garcillano, an official of the Commission on Elections. Ong claims that four of the known master tapes incriminate Arroyo and all of the other politicians who were officially declared winners of the 2004 elections. Arroyo supposedly rigged the elections, and thus, is not the real winner.